Best Hygrometer For Gun Safe | Top 7 Picks Reviewed

Rust and corrosions are two of the major problems that can substantially degrade the guns’ overall lifespan. And firearms do not even come in cheap. They do cost a lot.

For that reason, most of the gun safes will come with a built-in dehumidifier. However, not all of them are effective.

Well, if you want to make sure that your precious firearms operate optimally for an extended amount of time, you should ensure that the dehumidifier is working optimally. And for that, you will require the best gun safe hygrometer.

However, choosing one among all of the available options can be an extremely difficult task.

But you can stay worry-free because we are here to make things easier for you. We are going to narrow down the overall options to a great extent and make choosing one feel like taking a walk in the park for you.

Best Pick

The ThermoPro TP65A Digital Wireless is the best overall option. It packs a large touchscreen display, and it is capable of receiving temperature and humidity information from three different sensors.

Budget Pick

However, if you are on a tight budget, we would definitely recommend checking out the ThermoPro TP50 Digital. It has all the basic functionalities and packs a large easy to read display. Also, it has a high refresh rate.

Quick Comparison

7 Best Gun Safe Hygrometer review

It would be relatively easy for you to get bewildered by all of the hygrometers that are available. Well, we are not going to let you be in such kind of scenario.

And for that reason, we went through the most popular options that are out there and picked only the ones that we think are worthy of recommendation. They are:

1. ThermoPro TP65A Digital Wireless

Highlighted Features

  • Sports a large four inches screen
  • The screen has backlighting
  • Full touchscreen capabilities
  • Can receive signals from three different sensors
  • Has a 200 feet range

Ease of use is one of the main factors of a hygrometer. Well, that is why you should get something that sports a large LCD screen on the front. And a perfect example of that would be this one that Thermopro is offering.

As we mentioned, the device packs a large LCD display. It is four inches in size and has a backlit screen.

Because of the inclusion of backlighting, monitoring the temperature and the moisture level in dimly lit environments will be an easy task for you.

The screen also has a touchscreen digitizer in the back. That makes navigating through the UI feel intuitive. And there are a plethora of functions packed inside the device.

It features a min and max recording option that will let you know about the trend of the moisture level and the temperature of the place. It can show in both Fahrenheit and Celcius units.

Apart from that, the unit is capable of receiving signals from three different remote sensors. You can place each of them in a different position in your gun safe, which is going to let you precisely monitor the hydration level of the air inside a large safe.

The range of the remote sensors is about 200 feet. That means you can conveniently install the monitor device at the place that you prefer. There are multiple installation options too.

The monitoring device has magnets on the back that is going to allow you to easily attach it to metal surfaces. Also, there is a hole for hanging it.

2. ThermoPro TP50 Digital

Highlighted Features

  • Exceptionally accurate
  • The temperature and the humidity data refreshes every ten seconds
  • Two different installation process
  • Shows minimum and maximum data
  • Allows the user to switch between Fahrenheit and Celcius units

Accuracy is a crucial factor for hygrometers. Having an inaccurate monitor is just as good as not having any monitor at all. If you opt for this model that ThermoPro is offering, you would not have to worry about that anymore.

First of all, unlike some of the moisture monitors that are out there, this one packs an air comfort level indicator. That will quickly let you know about the current environment by showing you how dry and wet the air is around. For that reason, you will know about the inside condition of the safe in just a glance.

It also has a high refresh rate. As a result, you will not have to wait that long to know the air’s current condition inside the safe. Also, the readings are extremely accurate. That, combined with the high refresh rate, you can efficiently monitor the moisture level.

Apart from that, just like a few of the other models, this one also shows the min and max records. Because of that, the monitoring task for the moisture inside the safe will be an easy task for you. You can also switch the temperature unit from Fahrenheit and Celcius.

Other than that, the monitoring device sport a convenient overall design. It will allow you to place it on top of a table easily. Also, as it has magnets in the back, you can attach it directly to a metallic surface.

3. AcuRite Monitor Thermometer Gauge with Temperature

Highlighted Features

  • Offers plenty of mounting options
  • Exceptionally accurate
  • Has a calibration feature
  • Packs a quick glance feature
  • Has a wide temperature and RH level range

Among all the hygrometers out there, the ones with different installation methods are the most convenient ones. And a perfect unit that can illustrate that would be this one that AcuRite is offering.

Like we said, this one offers a plethora of installation methods. You can either hang it on something with the hanging hole that it has on the back or you can place it on top of a table or countertop.

The base is pretty stable, which means you would not have to worry about it falling off.

Apart from that, the accuracy of the monitoring device is quite praiseworthy. The RH range is from 1 to 99 percent, and that has an accuracy of about 2 percent RH.

Also, the temperature range is -4 degrees to 158 degrees Fahrenheit with 0.5 Fahrenheit accuracy. So you can expect it to monitor exceptionally accurate temperature and moisture level.

Keeping the tabs up with the other available units in the market, AcuRite also implemented a quick glance features inside this unit. It has a highlighted line that will allow you to quickly read the temperature and humidity level.

Lastly, the device packs a calibration feature that will enable you to make the readings more accurate. You are sure to get an accurate reading after you calibrate it properly.

4. AcuRite 01080M Pro Accuracy Temperature and Humidity Gauge

Highlighted Features

  • Has an alarm mechanism
  • The readings are incredibly accurate
  • Can be calibrated
  • Has a ten seconds refresh rate
  • Has an easy to read display

While there are plenty of hygrometers in the market, hardly a few have an alarm feature. Well, if you were in the search for one, then this one that is from AcuRite can be an excellent choice.

Let us first talk about the feature that sets it apart from the rest. It packs an alarm feature that will let you choose the high and low humidity levels.

Once the levels dip or rise above those two set points, the device will provide you an audio alarm. As a result, you would not really have to keep your eyes on the monitor all day long.

On that note, the display that it features is quite easy to read. The temperature range of the monitor is from -4 degrees Fahrenheit to 158 degrees Fahrenheit.

All of the numbers are displayed in a bold and sharp text. As a result, it will be easier for you to monitor the humidity and the temperature of the safe.

There is a quick glance mechanism that will show you whether the temperature and the humidity level is safe or not. The accuracy of the monitor is exceptionally high.

You can also calibrate it even further, which will allow you to make sure that the readings are extremely accurate.

Also, the refresh rate is relatively high too. All the data that the monitor will read will get refreshed with new readings after a ten seconds interval.

Because of that, you are sure to get accurate readings of temperature and hydration level of air all the time.

5. AcuRite 00611  Wireless Temperature Sensor

Highlighted Features

  • Offers different mounting options
  • Has an easy to read display
  • Packs the at-a-glance feature
  • Displays highly accurate data
  • The sensor is waterproof and is resistant to dust

The manufacturer AcuRite seems to have an extensive lineup of hygrometers that are exceptionally reliable. And this one that we are going to have a look at is one of them.

First of all, the sensor that it bundles along in the box is pre-calibrated. That means you would not have to go through the extra steps to make it accurate.

It is fine-tuned from the factory to offer you accurate readings of humidity level and temperature levels.

Apart from that, the display that it packs on the front is relatively large and is quite easy to read. The texts that are displayed are large in size and sharp. For that reason, you would not have any trouble in the case of reading the data from the screen.

It has the at-a-glance section that makes monitoring an easy task. That section will show all the humidity and temperature data on the bottom, which will allow you to know about the air condition inside the safe quickly.

Other than that, the temperature and the humidity sensor that it comes with is resistant to water and dust. For that reason, you would not have to worry about the accuracy going down over time.

There are multiple mounting options too. You can choose to place it on top of the countertop or on top of a table. Also, because of the mounting hole that is on the back, you can hang it if you prefer.

6. Vicks Humidity Monitor

Highlighted Features

  • Features an easy to read display
  • Compact and lightweight body
  • Has a plethora of mounting options
  • Comes with safe humid levels printed on the body
  • The accuracy of the readings is quite praiseworthy

Have you ever heard of Vicks? Yes, we are talking about the manufacturer that makes cough and inhalers.

Besides offering cough and congestion relief products, they are in the market providing temperature and humidity monitors. And this one that we are going to talk about is one of them.

First of all, the unit sports a compact and lightweight design. That overall footprint makes the mounting and installation process an easy task.

You can easily set it up on top of a countertop or on top of a table.  Also, there is a mounting hole on the back that will allow you to hang it.

Apart from that mounting options, the accuracy is up to par with the other premium monitors that are out in the market. It can precisely track the temperature and the humidity level of the air.

Because of that, the task of keeping the hydration level inside the gun safe will be easy for you.

Even though it is mainly designed to keep the atmospheric air at a safe level, it does work exceptionally well inside a gun safe.

It has an adequate range of humidity printed on the body, which will let you know which moisture level and temperature are too dry and too humid.

Lastly, the screen that it sports is relatively large, and it displays all the data in a bold and sharp text. For that reason, reading the temperature and the RH level will not be that much of a hassle for you.

7. Habor Accurate Mini Digital Hygrometer

Highlighted Features

  • Light and compact in size
  • Packs a long-lasting battery
  • Highly accurate
  • Ten seconds refresh rate
  • Features a large and easy to read display

Even though there is an overabundance of options in the market, the ones that are compact and easy to use are the ones that we would usually recommend you to shoot for. And one of those would be this unit that Harbor is offering.

As we mentioned, the overall footprint of the unit is quite compact and lightweight. That means you would not have to waste that much amount of space to install it. You can easily put it in a tight corner of the safe.

Apart from that, it is powered on through a high performing CR2 battery. Those type of battery usually ensures an extended runtime.

It would not need a battery replacement that frequently. You can expect it to work optimally for about six months.

Besides that, the monitor’s accuracy is up to par with the rest of the high-end models. Because of being highly accurate, you can fully rely on it to show you precise air condition inside the safe.

The temperature range that it can read is from 32 degrees Fahrenheit to 122 degrees Fahrenheit.

Just like some of the other monitors, this one also has a high refresh rate. It reads and refreshes all the data after ten seconds. That feature will ensure that the device shows you precise numbers at any given moment.

The LCD screen is also quite large in size, and it displays crisp and clear texts, which makes it easier to read the readings.

Things To Consider Before Buying Gun Safe Hygrometer

There are quite a few small factors that you need to identify for items such as  these. But do not worry, we have mentioned the most important ones below.

Hygrometer Display

The first thing that you need to consider is the display. Check the size first. Make sure that it is large in size to offer you all of the information.

If you purchase a product with a small-sized display, it will be hard for you to gain all information regarding all of the parameters at one glance.

Additionally, large screens would show you the temperature reading, humidity reading, and other factors. So, our recommendation would be to get the devices with large displays.

Aside from the size, you also need to check whether the display has backlighting or not. Without backlighting, it can get a bit hard to check the readings when there is not an adequate amount of light around.

In other words, you would be able to read the information easily if there is backlighting on display. 

Type of Sensor

Usually, most of the brands Hygrometer are going to offer devices that will use wireless sensors. Those eliminate the hassle of managing the wires, which will eventually allow you to get a clean setup.

However, not all of the wireless sensors are highly accurate. Some of them even have a huge delay in terms of reading speed.

Other than that, some of the devices will come with wired sensors. Even though it will be a bit hard for you to get a clean installation with those, they will have a lower amount of latency. Additionally, some of the wired sensors are highly accurate as well.

Plus, if you are purchasing a device that has a wireless sensor, consider the range. If the range is too short, you would have to keep the main device near to your gun safe, which might not always be possible. For that reason, we would suggest getting a product with a high-range wireless sensor.


Apart from the type of sensor, you would also have to factor in the sensor’s accuracy. The higher the accuracy, the more reliable the readings are going to be. 

Moreover, you would not want to get something that offers inaccurate reading, as it will not help you identify the humidity level and all other important readings. 

In addition, you would have to consider how frequently the readings are refreshed. The smaller the time frame, the more accurate the readings are going to be. And the devices that have a quicker refresh time would usually offer you information that is collected at that instant moment.

Installation Procedure

The mounting procedure will not be the same for all of the hygrometers you will find in the market. Some will require you to mount them on the wall, while some can be kept on top of a flat surface. No matter what the mounting procedure is, make sure that the device comes with all of the mounting hardware.

Without the mounting hardware, it will be hard for you to install the device. On the other hand, if all of the mounting hardware is included with the package, the installation process should go smoother. You would not have to go through that much hassle in terms of setting them up.

Built-in Memory

Some of the manufacturers are going to pack their devices with built-in memory. As a result, those devices will have the ability to store the minimum and maximum reading of a day. That will come in handy if you want to monitor the temperature and humidity level of the safe closely.


Hopefully, we were able to narrow down the overall options to the extent that the task of choosing the best gun safe hygrometer is now easy for you.

To conclude, we wish you good luck and hope you can make the dehumidifier inside the gun safe work efficiently. May your guns last for an extended amount of time and operate optimally throughout their entire lifespan.

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